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Finding the Fourth Proportional to 2,097.41, 3,146.39 and 691.36

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Solution

The fourth proportional to 2,097.41, 3,146.39 and 691.36 is: 1,037.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,097.41 : 3,146.39 = 691.36 : x
  2. Step 2: Convert to fraction form
    2,097.41/3,146.39 = 691.36/x
  3. Step 3: Cross multiply
    2,097.41x = 3,146.39 × 691.36
  4. Step 4: Simplify right side
    2,097.41x = 2,175,288.19
  5. Step 5: Solve for x
    x = 2,175,288.19/2,097.41
  6. Step 6: Final answer
    x = 1,037.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.